| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of correcting a bending tendency capable of effectively correcting the bending tendency including a local uneven shape, and a method of forming a cross-sectionally groove-shaped member by using the method of correcting the bending tendency. <P>SOLUTION: The method of correcting the bending tendency is used for correcting the bending tendency 5 generated when a bent part 3 of a metal plate 1 is nearly flattened by bending the bent part 3 in a direction opposite to the bending direction. The method of correcting the bending tendency includes: a first correction process of plunging a convex-shaped punch 7 having a curvature smaller than that of the bending tendency 5 of the metal plate 1 in a small range relative to a double distance of the thickness of the metal plate 1 from a projecting side of the bending tendency 5 to the side opposite to the projecting side to form a curved shape having a curvature set projecting in a direction opposite to the bending tendency 5; and a second correction process of sandwiching the metal plate 1 corrected by the first correction process between elastic bodies 15≥0.03 GPa in Young's modulus equivalent to be corrected to be plunged in a range not larger than three times of the thickness from the projecting side of the metal plate 1 to the opposite side thereof by the convex-shaped punch 7 having a curvature at a tip. <P>COPYRIGHT: (C)2013,JPO&INPIT |
